解答
解答
求解步骤
Given:
给定 的圆半径:
给定 的圆面积:
流行的例子
The sum of two numbers is 157 . One number is 75:less than the other. Find the numbers.An insurance agent is trying to sell you an annuity, that will provide you with 10,600 at the end of each year for the next 30 years. If you don't purchase this annuity, you can invest your money and earn a return of 5%. What is the present value of the annuity?the sum of twice a number and 910 years from now Sharon will be 48 years old. The current sum of the ages of Sharon and Tiffany is 44. How old is Tiffany right now?The perimeter of a rectangular driveway is 94 feet. It is 16 feet wide. How long is it?